Diffuser



FIG. 1 is a perspective view of the new ornamental diffuser of the present invention.

FIG. 2 is a left side view thereof.

FIG. 3 is a right side view thereof.

FIG. 4 is a top view thereof; and,

FIG. 5 is a bottom view thereof. 

CLAIM The ornamental design for a diffuser, as shown and described. 